Answers for "dart delay function"

flutter delay

Future.delayed(Duration(milliseconds: 100), () {
  // Do something
});

flutter sleep

await Future.delayed(const Duration(seconds: 1));
sleep(const Duration(seconds: 1));

flutter delay

Timer(Duration(seconds: 5), () {
  print(" This line is execute after 5 seconds");
});

sleep in dart

import 'dart:io';

main() {
  sleep(const Duration(seconds:1));
}

dart timer delay

Timer(Duration(seconds: 3), () {
  print("Yeah, this line is printed after 3 second");
});

// repeatedly :
Timer.periodic(Duration(seconds: 5), (timer) {
  print(DateTime.now());
});